<template>
	<view class="container">
		<!-- 头部轮播 -->
		<view class="carousel-section">
			<!-- 标题栏和状态栏占位符 -->
			<view class="titleNview-placing"></view>
			<!-- 背景色区域 -->
			<view class="titleNview-background" :style="{backgroundColor: titleNViewBackground}"></view>
			<swiper class="carousel" circular @change="swiperChange">
				<swiper-item v-for="(item, index) in bannerList" :key="index" class="carousel-item">
					<image :src="item.img" />
				</swiper-item>
			</swiper>
			<!-- 自定义swiper指示器 -->
			<view class="swiper-dots">
				<text class="num">{{swiperCurrent+1}}</text>
				<text class="sign">/</text>
				<text class="num">{{bannerList.length}}</text>
			</view>
		</view>
		<!-- 分类 -->
		<view class="cate-section" v-if="LabelsList && LabelsList.length > 0">
			<view class="cate-item" v-for="(itme,index) in LabelsList" :key="index" @click="navToList(itme.id,0)">
				<image :src="itme.ioc"></image>
				<text>{{itme.name}}</text>
			</view>
		</view>


		<!-- 中间的广告位  -->
		<!-- <view class="ad-1" v-if="homeList.zx.url!=''">
			<image :src="homeList.zx.url" mode="scaleToFill" @click="xiangq()"></image>
		</view> -->

		<view class="hot-floor">
			<view class="f-header m-t">
				<image src="/static/hot.png"></image>
				<view class="tit-box">
					<text class="tit">热门推荐</text>
					<text class="tit2">Recommend Goods</text>
				</view>
				<!-- <text class="yticon icon-you" @click="navToList(0,1)"></text> -->
			</view>
			<scroll-view class="floor-list" scroll-x>
				<view class="scoll-wrapper">
					<view v-for="(item, index) in recommendList" :key="index" class="floor-item"
						@click="navToDetailPage(item.goodsId)">
						<image :src="item.thumbs[0]" mode="aspectFill"></image>
						<text class="title clamp">{{item.name}}</text>
						<view class="price">￥<text class="priceNum">{{item.discountPrice && item.discountPrice > 0 ? item.discountPrice : item.price}}</text></view>
					</view>
				</view>
			</scroll-view>
		</view>


		<view class="f-header m-t">
			<image src="/static/temp/h1.png"></image>
			<view class="tit-box">
				<text class="tit">精选</text>
				<text class="tit2">Best Selling</text>
			</view>
			<!-- <text class="yticon icon-you" @click="navToList(0,2)"></text> -->
		</view>

		<view class="guess-section">
			<view v-for="(item, index) in goodsWallList.list" :key="index" class="guess-item"
				@click="navToDetailPage(item.goodsId)">
				<view class="image-wrapper">
					<image :src="item.thumbs[0]" mode="aspectFill"></image>
				</view>
				<text class="title clamp">{{item.name}}</text>
				<view class="price">￥<text class="priceNum">{{item.discountPrice && item.discountPrice > 0 ? item.discountPrice : item.price}}</text></view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				titleNViewBackground: 'white',
				swiperCurrent: 0,
				swiperLength: 0,
				LabelsList: [],
				bannerList: [], // banner
				recommendList: [], // 推荐商品列表
				goodsWallList: [], // 商品图墙
				currentPage: 1,
				hasMore: false,
			};
		},

		onLoad(res) {
			console.log('小程序首页进来了:', res);
			this.currentPage = 1;
			this.loadInfo();
		},
		async onReachBottom() {
			if (this.hasMore) {
				console.log("触底加载更多!")
				this.loadMore();
			}
		},
		methods: {
			loadInfo() {
				let _this = this;
				this.$Net.req({
					url: this.$API.fetchHomeIndex(),
					method: "get",
					data: {
						page: 1,
						size: 20,
					},
					dataType: 'json',
					success: function(result, status) {
						if (result.goodsList.end) {
							_this.hasMore = false;
						}
						_this.currentPage = result.goodsList.next;
						_this.bannerList = result.bannerList;
						_this.recommendList = result.recommendGoods;
						_this.goodsWallList = result.goodsList;
						_this.titleNViewBackground = result.bannerList && result.bannerList.length > 0 ? result.bannerList[0].imgColor : 'white';
						console.log('返回结果: ', _this.bannerList, _this.recommendList, _this.goodsWallList);
					},
				});
			},
			loadMore() {
				// 触底加载下一页
				let _this = this;
				this.$Net.req({
					url: this.$API.fetchHomeGoodsMore(),
					method: "get",
					data: {
						page: this.currentPage,
						size: 20,
					},
					dataType: 'json',
					success: function(result, status) {
						if (result.end) {
							_this.hasMore = false;
						}
						_this.currentPage = result.next;
						let oldList = _this.goodsWallList.list
						let goodsList = oldList.concat(result.list)
						result.list = goodsList;
						_this.goodsWallList = result;
					},
				});
			},

			//轮播图切换修改背景色
			swiperChange(e) {
				const index = e.detail.current;
				this.swiperCurrent = index;
				this.titleNViewBackground = this.bannerList[index].imgColor;
			},
			
			//详情页
			navToDetailPage(id) {
				uni.navigateTo({
					url: `/pages/product/product?id=${id}`
				})
			},
			navToList(sid, tid) {
				uni.navigateTo({
					url: `/pages/product/list?sid=${sid}&tid=${tid}`
				})
			}
		},

	}
</script>

<style lang="scss">
	/* #ifdef MP */
	.mp-search-box {
		position: absolute;
		left: 0;
		top: 30upx;
		z-index: 9999;
		width: 100%;
		padding: 0 80upx;

		.ser-input {
			flex: 1;
			height: 56upx;
			line-height: 56upx;
			text-align: center;
			font-size: 28upx;
			color: $font-color-base;
			border-radius: 20px;
			background: rgba(255, 255, 255, .6);
		}
	}

	page {
		.cate-section {
			position: relative;
			z-index: 5;
			border-radius: 16upx 16upx 0 0;
			margin-top: -20upx;
		}

		.carousel-section {
			padding: 0;

			.titleNview-placing {
				// #ifdef MP
				padding-top: 26rpx;
				// #endif
				// #ifndef MP
				padding-top: 0rpx;
				// #endif
				height: 0;
			}

			.carousel {
				.carousel-item {
					// #ifdef MP
					padding: 0 10px;
					// #endif
					// #ifndef MP
					padding: 0;
					// #endif
				}
			}

			.swiper-dots {
				// #ifdef MP
				left: 65upx;
				bottom: 30upx;
				// #endif
				// #ifndef MP
				left: 45upx;
				bottom: 40upx;
				// #endif
			}
		}
	}

	/* #endif */


	page {
		background: #f5f5f5;
	}

	.m-t {
		margin-top: 16upx;
	}

	/* 头部 轮播图 */
	.carousel-section {
		position: relative;
		// padding-top: 10px;

		.titleNview-placing {
			height: var(--status-bar-height);
			padding-top: 44rpx;
			box-sizing: content-box;
		}

		.titleNview-background {
			position: absolute;
			top: 0;
			left: 0;
			width: 100%;
			// #ifdef MP
			height: 380upx;
			// #endif
			// #ifndef MP
			height: 430upx;
			// #endif
			transition: .4s;
		}
	}

	.carousel {
		width: 100%;
		// #ifndef MP
		height: 330upx;
		// #endif
		// #ifdef MP
		height: 310upx;
		// #endif

		.carousel-item {
			width: 100%;
			height: 100%;
			padding: 0 28upx;
			overflow: hidden;
		}

		image {
			width: 100%;
			height: 100%;
			border-radius: 10upx;
		}
	}

	.swiper-dots {
		display: flex;
		position: absolute;
		left: 60upx;
		bottom: 15upx;
		width: 72upx;
		height: 36upx;
		background-image: url();
		background-size: 100% 100%;

		.num {
			width: 36upx;
			height: 36upx;
			border-radius: 50px;
			font-size: 24upx;
			color: #fff;
			text-align: center;
			line-height: 36upx;
		}

		.sign {
			position: absolute;
			top: 0;
			left: 50%;
			line-height: 36upx;
			font-size: 12upx;
			color: #fff;
			transform: translateX(-50%);
		}
	}

	/* 分类 */
	.cate-section {
		display: flex;
		justify-content: space-around;
		align-items: center;
		flex-wrap: wrap;
		padding: 30upx 22upx;
		background: #fff;

		.cate-item {
			display: flex;
			flex-direction: column;
			align-items: center;
			font-size: $font-sm + 2upx;
			color: $font-color-dark;
		}

		/* 原图标颜色太深,不想改图了,所以加了透明度 */
		image {
			padding: 13rpx;
			width: 120upx;
			height: 120upx;
			margin-bottom: 14upx;
			border-radius: 10%;
			opacity: .6;
			box-shadow: 4upx 4upx 20upx rgba(168, 168, 168, 0.4);
		}
	}

	.ad-1 {
		width: 100%;
		height: 210upx;
		padding: 10upx 0;
		margin-top: 18rpx;
		background: #fff;

		image {
			width: 100%;
			height: 100%;
		}
	}

	.f-header {
		display: flex;
		align-items: center;
		height: 140upx;
		padding: 6upx 30upx 8upx;
		background: #fff;

		image {
			flex-shrink: 0;
			width: 80upx;
			height: 80upx;
			margin-right: 20upx;
		}

		.tit-box {
			flex: 1;
			display: flex;
			flex-direction: column;
		}

		.tit {
			font-size: $font-lg +2upx;
			color: #font-color-dark;
			line-height: 1.3;
		}

		.tit2 {
			font-size: $font-sm;
			color: $font-color-light;
		}

		.icon-you {
			font-size: $font-lg +2upx;
			color: $font-color-light;
		}
	}

	.hot-floor {
		width: 100%;
		overflow: hidden;
		margin-top: 40rpx;
		margin-bottom: 20upx;


		.floor-list {
			white-space: nowrap;
			padding: 20upx;
			padding-right: 50upx;
			border-radius: 6upx;
			// margin-top:-10upx;
			// margin-left: 30upx;
			background: #fff;
			box-shadow: 1px 1px 5px rgba(0, 0, 0, .2);
			position: relative;
			z-index: 1;
		}

		.scoll-wrapper {
			display: flex;
			align-items: flex-start;
		}

		.floor-item {
			width: 180upx;
			margin-right: 20upx;
			font-size: $font-sm+2upx;
			color: $font-color-dark;
			line-height: 1.8;

			image {
				width: 180upx;
				height: 180upx;
				border-radius: 6upx;
			}

			.price {
				color: $uni-color-primary;
			}
			
			.priceNum {
				font-size: 1.3em;
				font-weight: bold;
			}
		}

		.more {
			display: flex;
			align-items: center;
			justify-content: center;
			flex-direction: column;
			flex-shrink: 0;
			width: 180upx;
			height: 180upx;
			border-radius: 6upx;
			background: #f3f3f3;
			font-size: $font-base;
			color: $font-color-light;

			text:first-child {
				margin-bottom: 4upx;
			}
		}
	}

	.guess-section {
		display: flex;
		flex-wrap: wrap;
		padding-top: 0.8em;
		padding: 0 16upx;
		background: #fff; // #fff;

		.guess-item {
			border-radius: 24rpx;
			display: flex;
			flex-direction: column;
			width: 48%;
			padding-bottom: 16rpx;
			background: #fff;
			margin-bottom: 14rpx;

			&:nth-child(2n+1) {
				margin-right: 4%;
			}
		}

		.image-wrapper {
			width: 100%;
			height: 330upx;
			border-radius: 3px;
			overflow: hidden;

			image {
				width: 100%;
				height: 100%;
				opacity: 1;
			}
		}

		.title {
			font-size: $font-lg;
			color: $font-color-dark;
			line-height: 80upx;
			padding-left: 0.5em;
		}

		.price {
			font-size: $font-lg;
			color: $uni-color-primary;
			line-height: 1;
			padding-left: 0.5em;
		}
		.priceNum {
			font-size: 1.5em;
			font-weight: bold;
		}
	}
</style>